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NBME 20 Answers

nbme20/Block 3/Question#7 (33.6 difficulty score)
A 10-year-old boy has a palpable mass in the ...
Endoderm of foramen caecumπŸ”,πŸ“Ί
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 +7 
submitted by xxabi(261),
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hisT si a osholslyrgat utcd t.ycs eTh ssorlltgoay udtc aym piersts nda eltsru ni a rshtallosoyg tcdu tycs rrcuing(co in nelidmi eanr iyohd neob ro at hte aseb of eht nugt,oe) shut liwl ccsilylalas eovm pu ihwt wswlnoliga ro gtneuo ioorut.nrsp

eTh mreoanf cmeuc of( the gneto)u si eth olmrna trmanne fo teh ohslysartlgo udct

lilyo  I got it wrong though because the question clearly asks what does this structure (thyroglossal duct) DEVELOP from, not this structure eventually develops to form which structure. If it asked that then I would have picked option A but because it didnt that was the first option I crossed out. +16  
misterdoctor69  It was a poorly worded question no doubt. But when they say "endoderm of foramen cecum" they're referring to the endoderm which is a primitive structure. The "foramen cecum" part is just a modifier that is added to describe what that endoderm would eventually become. +  
lovebug  FA 2019, page 322page! +  



 +2 
submitted by hungrybox(1051),
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The demordne of the 3rd nda 4th uspchoe omfr eth ydtraiohrap ngadl and teh aaulpafllcrori clsel fo eht tiodrhy n.gald